Clés pour comprendre (Keys to understanding) is a collection intended for the general public based on a dynamic Q&A game. Simple, cheeky or amusing questions are finally given clear, well-reasoned answers. The authors, recognised specialists, do not hesitate to mix science, humour and anecdotes.

Topical and in-depth subjects are explored in a series of questions designed to incite our curiosity about our surroundings and help us understand the world better.